<!DOCTYPE HTML>
<script src="clock.js"></script>
<script>
  let clock = new Clock({
    template: 'h:m:s'
  });
  clock.start();


  /* Your class should work like this: */

  /*

    let lowResolutionClock = new ExtendedClock({
      template: 'h:m:s',
      precision: 10000
    });

    lowResolutionClock.start();
  */
</script>
